Merging fixes made 2 days ago:

 * Documentation fixes
 * config.py fix ('example' room was being removed)
 * Allowing 'make serve' to run on non-standard ip:port for testing
Fix documentation issue in last commit

 * sudo added for apt-get/yum lines
And further corrections re sudo (as per last commit)
Fixes to setup.sh
Merge pull request #72 from ryanverner/master

Merging Ryan's fixes.